simplify some things and remove some unused code

home/terminal/programs/comma.nix

@@ -1,3 +1,12 @@
-{
-  programs.nix-index-database.comma.enable = true;
+{inputs, ...}: {
+  imports = [inputs.nix-index-database.hmModules.nix-index];
+
+  programs = {
+    nix-index-database.comma.enable = true;
+    nix-index = {
+      enableBashIntegration = false;
+      enableFishIntegration = false;
+      enableZshIntegration = false;
+    };
+  };
 }

home/terminal/programs/git.nix

@@ -18,6 +18,8 @@
     extraConfig = {
       gpg.format = "ssh";
       push.autoSetupRemote = true;
+      pull.rebase = true;
+      rebase.autostash = true;
     };
 
     userEmail = "xunuwu@gmail.com";

home/terminal/programs/tmux.nix

@@ -16,6 +16,9 @@
       set -g status-interval 5
       set -g status-right "#[fg=#25be6a]#(free -h | awk 'NR==2{print $3\"/\"$2}')"
       set -ag status-right  "#[fg=default] %a %d %b %H:%M"
+
+      set-option -g  default-terminal "xterm-256color"
+      set-option -ga terminal-overrides ",xterm-256color:Tc"
     '';
   };
 }

home/terminal/programs/zellij.nix

@@ -1,5 +0,0 @@
-{
-  programs.zellij = {
-    enable = true;
-  };
-}